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Morituri te salutant Survive 30 consecutive waves with at least one co-op player.

The Scouring of Mordor Challenge the Dark Lord in Mordor.

Medusa Freeze 5 enemies at once and destroy them with a blast of the Cryogun's secondary fire

In This Together Defeat the Widowmaker in Times Square without killing a single Hybrid

The Gully Completed the larger challenge in The Gully coliseum

How's It Hanging? Clean up the Dry Docks

Bobble-trap Collected 15 Claptrap bobbleheads

Jaws of Shadow Complete 25 Caragath Stealth Kills.

The Lubricator Found 25 oil cans

Bathed in Flames Enough running! I'll burn her to the ground right here! (Ch. 10)

What a party! Collected 3 panties, 5 fish in a bag, and 15 pizzas

Powerhouse Acquired all standard weapons.

Short Out Defeat the Stalker in under 60 seconds

Bull in a China Shop Freeze and melee kill 3 Ravagers

Twice Nightly Complete New Game Plus

Silver Revenge Obtain 48 medals on the original Arkham City ranked maps (as Batman)

Glutton for Punishment Used Ironsides to collect 20 rounds of ammo or more in Burial at Sea - Episode 2.

Stick it to the enemy Survive 15 consecutive waves using the analog combat controls.

The Last Laugh The joke's on who?

Nothing But Net Score a basket by lobbing a grenade through a basketball hoop

Fireworks Use the Wildfire secondary fire to kill 6 enemies in one shot

Bringing the Pain Defeat 50 players using physical attacks in Versus.

“A Shocking Turn of Events” – Expert The player has rescued the Little Sister in “A Shocking Turn of Events” in under 4:00

Racing and Pacing Finish the game in five hours.

Roops! Knock a Hybrid off the cliffs in Mt. Pleasant, PA

Cleaning time! Suck up all toys using the vacuum cleaner.

Complete a set During a single round kill an Infected, Suicider, Ram, Butcher, Floater, Walker.

I Had To Put Him Down Kill a Caragath with an Execution.

Completionist Completed all missions in Secret Armory

Squad Goals Score a Goal while in a Club Match (Online Matchmaking only)

Toast Use the upgraded Deadeye secondary fire to kill 2+ enemies, 5 times

Hell-Burbia Completed the larger challenge in the Hell-Burbia coliseum

Elevator Action Knock off every Tripod during the Elevator Sequence

It's Christmas every day! Create and give 10 toys to the AR Bots using a Companion Device.

Droid Rage Control the Terror Walker and destroy all the Terror Biodroids.

Electric Avenue Use the EMP to take down 25 drones

Silent Partner Damage the same enemy in Cooperative Mode for 100 kills

Modern Art Create a toy on your Companion Device using at least 5 colors.

Sandman Kill 5 Grims in a row with only headshots

Access Denied Absorb 1000 damage with Auger Shields

The Angelic Ruins Completed the larger challenge in The Angelic Ruins coliseum

Wretched Retch Use a Wretched Graug's Projectile Vomit on an Uruk Captain or Warchief.

Fear Does Not Exist… Play 5 pvp matches.

You Asked For It... Again Completed the game in Classic Mode.

Backstabber Kill 20 enemies with melée while they are idle

The Whole Story Collected all Audio Diaries and Voxophones in Burial at Sea - Episode 2.

Learn to Survive Survived the nightmare, and everything in between.

Big Tournament Completed each of the larger challenges in all 3 coliseums

Rattle the Hive Bait 10 Ghûl mounds.

Nothing Personal Takedown a friend in Multiplayer